 “History in the News: Ensuring the Safety of Millions.” Runs indefinitely.

 “Disability Rights Movement.” Pen President Bush used to sign Americans with Disabilities Act in 1990, one of first ultralight wheelchairs, other objects examining the history of the movement in America. Running indefinitely.

 “Communities in a Changing Nation: The Promise of 19th-Century America.” Objects and photos depicting 19th-century factory workers in Bridgeport, Conn., Jewish immigrants in Cincinnati and blacks in the South Carolina Low Country region around Charleston. On permanent display.

100 Raoul Wallenberg Place SW (near 15th Street and Independence Avenue SW). 202/488-0400. 10 a.m.-5 p.m. daily. Metro: Smithsonian. Certain attractions, such as “Daniel’s Story: Remember the Children,” do not require special passes. Entrance to the museum’s permanent exhibition is by timed entry passes, available at the museum (free) or through ProTix ($4.50 service charge), 800/400-9373.

 “Life in the Shadows: Hidden Children and the Holocaust.” Through May 12.